This card explains the oxygen dissociation curve, showing hemoglobin's affinity for oxygen at different partial pressures, and describes the effect of CO2 (Bohr effect) on oxygen release.
Tato karta vysvětluje křivku disociace kyslíku, která ukazuje afinitu hemoglobinu ke kyslíku při různých parciálních tlacích, a popisuje vliv CO2 (Bohrův efekt) na uvolňování kyslíku.
| Front | O2 dissociation curve 3.1.2(j) |
|---|---|
| Back | %saturation plotted against partial pressure of O2 showing affinity of Hb for O2, as PP inc, %saturation inc as molecule changes shape quickly, O2 added faster, curve platos at highest partial pressures as all haem groups bound to O2 (Hb saturated) - high partial pressure in lungs, so Hb rapidly loaded with O2, cells therefore receive O2 quickly - as P CO2 inc, Hb gives up O2 easier (Bohr effect) and so in active tissue (inc p CO2), Hb gives up O2 more readily and in lungs (low p CO2), Hb binds to O2 easily, as p CO2 curve moves to right |
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